Certification is performed by eu.bac, the European industrial association for building automation, in accordance with its testing and certification program. This is based on compliance with European standard EN15500, tests performed by independent testing institutions and inspections of the manufacturing facilities. The decisive criterion for issuing the certificate for room controllers is high control accuracy, i.e. minimal deviation of the actual room temperature from the desired temperature selected by the user. Studies by the Centre Scientifique et Technique du Bâtiment (CSTB) in France have shown that energy savings of up to 14% can be achieved by high-quality individual room controllers with a control quality of 0.1K.

The first certified Desigo controllers are designed for use with fan coil and radiator heating, reveals the company’s press release. The certificate confirms their extremely good control quality values, for example for fan coil 0.1K (cooling) and 0.2K (heating). Releases will now be issued progressively for other applications. Certification of field devices such as temperature sensors, valves and actuators is in preparation.